Activation Energy

What kind of reaction is this?

• Endothermic

• Exothermic

• Cannot be determined

Tags

NGSS.HS-PS1-4

Energy required to get a reaction started

• Activation Energy

• Enzymes

Anything that lowers activation energy

• Catalyst

• Reactions

The ______________is required to break the bonds of the reactants.

• Carbonic energy

• Activation energy

• Plutonic energy

• Energi Gaib

The minimum amount of energy needed for colliding particles to react is called

• Chemical Energy

• Kinetic Energy

• Activation Energy

• Potential Energy

The following graph shows two different reaction pathways for the same overall reaction at the same temperature. Which pathway is slower and why?

• Red, because the activation energy is larger

• Blue, because the activation energy is lower

• both reaction progress at the same rate

Tags

NGSS.HS-PS1-4

What is the role of activation energy in a chemical reaction?

• It provides the energy needed to start a reaction.

• It determines the temperature of the reaction.

• It acts as a catalyst in the reaction.

• It is the energy released during the reaction.

Tags

NGSS.HS-PS1-4

Which of the following factors can lower the activation energy of a reaction?

• Increasing the temperature

• Adding a catalyst

• Decreasing the concentration of reactants

• Increasing the pressure

Activation energy is best described as:

• The energy required to form products from reactants.

• The energy needed to break bonds in the reactants.

• The energy released when products are formed.

• The energy absorbed by the surroundings.

In an energy profile diagram, where is the activation energy represented?

• The peak of the curve

• The start of the curve

• The end of the curve

• The area under the curve